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SGSI is a Washington, DC-based company in the Energy and Utilities sector.
Arco Building Systems is a Norcross, GA-based company in the Energy and Utilities sector.
Shell is a global group of energy and petrochemicals companies. It consists of the businesses of Upstream, Integrated Gas, Downstream, and Projects & Technology. With approximately 90,000 employees in more than 70 countries and territories, Shell is helping to meet the world`s growing demand for energy in economically, environmentally and socially responsible ways.
Pro Drill Oilfiled Services Ltd. is a Edmonton, AB-based company in the Energy and Utilities sector.
Harper Oil Co. is a Springfield, IL-based company in the Energy and Utilities sector.